4.5" IF box x pin5 x 12 1/4 new heads jetted sealed bearingCap and teeth on backCenter included with hard surface and teethLarger heads are in stock if preferred Option with 16" heads $5000 extra30" Hole opener$26,000.00PriceQuantity*Price Options*30" Hole opnener$26,000.00every year until canceledAdd to CartSubscribe Now